law enforcement and military teams play until a champion is crowned. >> this is our first year hopefully, if we win we will be bragging a lot. >> reporter: this event doesn't draw a huge crowd but the others will. with the blue angels performing saturday and sunday afternoon and the america's cup sail boats some are predicting record-sized crowds in san francisco. >> it is really busy. i'm amazed, i'm not used to this craziness. >> reporter: sophia is going to try and see the air show and america's cup and squeeze in one other big event. >> of course the giants' game. my mom and i have season tickets, we are going friday for sure itch >> reporter: city officials are suggesting public transportation. the embarcadero is going to be the most conjested cars are not recommended. alex says he is going to stay away from people and watch it from the rooftop. >> we are not moving, we are not going to try to move. some friends are trying to leave here and get to the cal game that sounds like too big of a trek. just plant it on the roof and watch the angels. >> reporter: with the 49ers and giants p